Optical Analysis of Color Distribution in White LEDs With Various Packaging Methods

被引：159

作者：

Liu, Zongyuan ^{[1
]}

Liu, Sheng ^{[1
]}

Wang, Kai

Luo, Xiaobing ^{[2
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, Wuhan 430074, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2008年 / 20卷 / 21-24期

关键词：

Color distribution; light-emitting diodes (LEDs); packaging; phosphor;

D O I：

10.1109/LPT.2008.2005998

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Uniform color distribution is essential for the packaging of light emitting diodes (LEDs). The Monte Carlo ray tracing method is applied to analyze the color distribution of white LEDs. Five packaging methods are investigated and the location of phosphor layer is varied. Results reveal that the packaging method is the primary factor affecting the color distribution and a nonreflector packaging method presents better color uniformity. The location or phosphor has a small impact on the color uniformity but remote location, if too far, can reduce the uniformity significantly. The reduction of color uniformity may exceed 88%.

引用

页码：2027 / 2029

页数：3

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